Symbol: V4L2_EVENT_SUB_FL_ALLOW_FEEDBACK
drivers/media/usb/uvc/uvc_ctrl.c
1893
(sev->flags & V4L2_EVENT_SUB_FL_ALLOW_FEEDBACK) ||
drivers/media/v4l2-core/v4l2-ctrls-core.c
64
(sev->flags & V4L2_EVENT_SUB_FL_ALLOW_FEEDBACK))